Home / 1,792.40-2,688.15-1,207.08

Finding the Fourth Proportional to 1,792.40, 2,688.15 and 1,207.08

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Solution

The fourth proportional to 1,792.40, 2,688.15 and 1,207.08 is: 1,810.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.40 : 2,688.15 = 1,207.08 : x
  2. Step 2: Convert to fraction form
    1,792.40/2,688.15 = 1,207.08/x
  3. Step 3: Cross multiply
    1,792.40x = 2,688.15 × 1,207.08
  4. Step 4: Simplify right side
    1,792.40x = 3,244,812.10
  5. Step 5: Solve for x
    x = 3,244,812.10/1,792.40
  6. Step 6: Final answer
    x = 1,810.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.